Here is the conundrum : the stronger the obverse and the better the hair detail, the more likely it is that there will problems with ghosting and weakness on the reverse. It's rare you will get both - the high profile obverse sucked metal from the reverse, which had thin rims and little protection. Ironically the short-lived recessed ear experiment of 1915-16 went a long way to curing the problem, so why it was abandoned... (answers on a postcard).